[R] Surv object in data.frame

Thomas Lumley tlumley at u.washington.edu
Thu Mar 16 01:56:39 CET 2006

On Thu, 16 Mar 2006, Heinz Tuechler wrote:

> Thank you, Thomas. You are right, it works, but why then I find on the help
> page for Surv{survival} the following sentence:
> "To include a survival object inside a data frame, use the I() function.
> Surv objects are implemented as a matrix of 2 or 3 columns."

That was probably true when it was written, but that was a long time ago. 
I will change it.


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